unused_geninfo ring heads from the heap; fixing gcc aliasing
  warnings.


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Submitted by Gregg L. Smith <gls gknw.net>


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via the MOD_XXX_LDADD variables.

Use APR_ADDTO instead of APR_SETVAR or direct
variable assignment.

This is especially useful when building mod_lua
or mod_deflate against a lua resp. libz which
are installed in non-standard locations.
One can add "-R ..." to MOD_LUA_LDADD and
MOD_DEFLATE_LDADD before configure to fix
the RPATH/RUNPATH of those modules.


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PROGRAM_LDADD.

Otherwise -lpcre comes before libmain which leads
to undefined recences during linking of httpd.

Followup to r1142739.


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for modules that have been enabled only implicitely.


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No other support binary needs PCRE.


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Library flags are kept in MOD_DEFLATE_LDADD, not
globally in LDFLAGS.


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when building mod_deflate and mod_lua.


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the distcache installation directory.

2) Use correct build variable MOD_SOCACHE_DC_LDADD
instead of MOD_SOCACHE_LDADD in build macro.

Also made the macro a bit more consistent with the
SSL checking macro.


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--enable-mods-static.


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allocates a new one.  This resolves a crash seen on WinXP, caused
by r1103595.

Bad revision found by: Gregg L Smith <gls gknw.net>


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It allows to log custom debug messages at various phases in the request
processing and is the first consumer of the new string-valued ap_expr API.


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- add possibility to have expressions that evaluate to a string and not to
  a boolean value
- modify ap_expr_parse_cmd() interface to support this and make it more
  convenient to use in general
- rename AP_EXPR_FLAGS_* to AP_EXPR_FLAG_* for consistency


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PR: 37912
Submitted by: Nick Burch <nick burch alfresco com>



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